{
    "signature": {
        "token": "335da63647194414fe8bbb7c67b3b0585e426bcd10b258dcf4",
        "timestamp": "1661621468",
        "signature": "e3c1ce2c6c7a678823e610537eeef59426df9b1b8ed4a49a91e144e71aa64fa9"
    },
    "event-data": {
        "id": "-Agny091SquKnsrW2NEKUA",
        "timestamp": 1521233123.501324,
        "log-level": "warn",
        "event": "complained",
        "envelope": {
            "sending-ip": "173.193.210.33"
        },
        "flags": {
            "is-test-mode": false
        },
        "message": {
            "headers": {
                "to": "Alice <alice@example.com>",
                "message-id": "20110215055645.25246.63817@app.symfony.com",
                "from": "Bob <bob@app.symfony.com>",
                "subject": "Test complained webhook"
            },
            "attachments": [],
            "size": 111
        },
        "recipient": "alice@example.com",
        "campaigns": [],
        "tags": [
            "my_tag_1",
            "my_tag_2"
        ],
        "user-variables": {
            "my_var_1": "Mailgun Variable #1",
            "my-var-2": "awesome"
        }
    }
}
